Process of concentrating fruit-juices.



it appertainsto make and use the same.

beet, and all other juices and liquids or fluids containing sugar or sacchar ne matntility and value in tropical and other counoils and flavors. In the present process, the

NT onion.

WILLIAM B. JACKSON, OF TACOMA; WASHINGTON.

rnocnlss 0F ooncnnrmrme 'FRUIT-JUICES.

asnsao.

No Drawing.

To all whom it may concern:

Be itknown that l, W ILLIAM B. J AoKsoN, E a citizen of the United States, residing at Tacoma, in the county of Pierce and State of Vashington, have invented certain new 5 and useful Improvements in Processes oft Concentrating l ruit-Juices; and I do hereby l declare thefollowing to be a full, clear, and i exact description of the invention, suclras willenable others skilled in the art to whlch The invention relates to a process of concentrating fruit uices, bemg applicable to all kinds of fruit uices, and sugar-cane, and

ter, and further, it may be employed also in the reduction of the volume of milk and other liquids and fluids. I

The object of the invention is to obtain a process by which the volume of liquid is greatly reduced, and quality 1mproved,wh1le the essential oils or flavors primarily belonging to the juices are retained, and will remain unchanged, thus making it of great tries where certain fruits are not produced, and where such concentrated juices, having their natural-flavor, are very valuable.

Briefly, the invention consists in' subjecting the juice to a temperature considerably below freezing, in which condition the watery portion will be in the form of ice, While the purer and undiluted juice remains in liquid form. This is then drawn off. During the process of freezi considerable amount of the concentrated uice is imprisoned in the ice, where numerous small cells are to befound, and my invention contemplates also, the recovering of this portion of the original juice, and this is accomplished by placing the ice in a rapidly revolving centrifugal machine, cylinder or the like, so that the juice will be thrown out of the ice after said ice is sufiiciently broken. The juice being thus liberated is permitted to run from the machine and be collected in any suitable receptacle.

In processes of this character, it has been a common proceeding to subject fruit juices, to evaporation, either by solar or artificial heat,'in order to obtain the best and most desirable qualities of the liquids and retain in such concentrated form all of the essentialv Specification of Letters'latent.

circumstances maymake necessary. This freezing action is carried on in any suitable room or apartment, by the usual refrigerating machinery. and in this room are contained vats, cans, or cylinders of any convenient shape, and of any de irable material, the juices being placed in said receptacles. In some instances, it may be found desirable to rotate, or give other motion to the'liquid containing receptacles, although this is not always necessary.

After the cold temperature has had the requisite action upon the liquids, all of the watery matter having been transformed into ice, the residue or concentrated fluid is drawn off as thecommercial product. It has been found, however, thatthe ice result- .ing fromthe process contains a great deal of the concentrated juices Within its inner cells, and in order to prevent the loss of this por- Patented Jan. 17, 1911. 7 Application filed December 26, 1908. Serial No. 469,329.

tion, the ice is broken or crushed and place d in -a rapidly revolving,horizontalor perpendicular, centrifugally operating recep.-- tacle. The cylinder may be giventanywherefrom five hundred to fifteen hundred revolua tions' a minute, so as to give the bestresults obtainable, and during the rotation of the receptacle, any desirable fluid remaining in' the ice is thrown 'out,the :icefbeing sufii ciently broken; This latter step of the-process must be carried on in the cold room,

although not necessarily so cold as'the freez ing room, the purpose beingto preventany melting action of the ice. j

It will be obvious that the invention as here described, is susceptible of certain changes'and modifications, Without departing from the essential idea therein involved, namely, the subjecting offruit or other juices to a temperature considerably below freezing whereby to form ice of the water in the juices, permitting the concentrated juice 'to flow from the ice thus formed, and then breaking up the ice and placing itin a rap-' idly revolving cylinder or other receptacle to recover Whatever portions of the concentrated juice may be retained within the cells of the ice formation.

What I claim and tars-Patent is The process of concentrating liquids which consists in subjecting the same to a temperadesire to secureby Letture considerably below'freezing, fii'st sepa ture, 'in the presence of two subscribing rating'the concentrated portion from the witnesses.

liquid and subsequently removing the rei mainiilg portions contained within the ice WILLIAM JACKSON 5 by crushin the same and subjecting said Witnesses:

ice to centrifugal action. M. D. Woou,

In testimony whereof, I aflix my signa- W. H. DooLI'rrLE. 

